Evidence map›Paper›PMID 35412890›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2022

Engineered plant control of associative nitrogen fixation.

Timothy L Haskett, Ponraj Paramasivan, Marta D Mendes, Patrick Green, Barney A Geddes, Hayley E Knights, Beatriz Jorrin, Min-Hyung Ryu, Paul Brett, Christopher A Voigt and 2 more

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed
12.6field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

46 citing papers in PubMed, 69 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

12 authors at 4 institutions in 3 countries.

Timothy L HaskettDepartment of Plant Sciences, University of Oxford, Oxford OX1 3RB, United Kingdom.ORCID 0000-0003-4675-6009
Ponraj ParamasivanSainsbury Laboratory, University of Cambridge, Cambridge CB2 1LR, United Kingdom.ORCID 0000-0002-1268-4505
Marta D MendesDepartment of Plant Sciences, University of Oxford, Oxford OX1 3RB, United Kingdom.
Patrick GreenDepartment of Plant Sciences, University of Oxford, Oxford OX1 3RB, United Kingdom.ORCID 0000-0001-7851-5918
Barney A GeddesDepartment of Plant Sciences, University of Oxford, Oxford OX1 3RB, United Kingdom.ORCID 0000-0001-8309-2083
Hayley E KnightsDepartment of Plant Sciences, University of Oxford, Oxford OX1 3RB, United Kingdom.ORCID 0000-0003-2002-4141
Beatriz JorrinDepartment of Plant Sciences, University of Oxford, Oxford OX1 3RB, United Kingdom.ORCID 0000-0002-6198-0925
Min-Hyung RyuSynthetic Biology Center, Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139.
Paul BrettBiochemistry and Metabolism, The John Innes Centre, Norwich NR4 7UH, United Kingdom.ORCID 0000-0002-9951-5252
Christopher A VoigtSynthetic Biology Center, Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139.ORCID 0000-0003-0844-4776
Giles E D OldroydSainsbury Laboratory, University of Cambridge, Cambridge CB2 1LR, United Kingdom.
Philip S PooleDepartment of Plant Sciences, University of Oxford, Oxford OX1 3RB, United Kingdom.ORCID 0000-0001-5087-6455
University of Oxford · GBMassachusetts Institute of Technology · USUniversity of Cambridge · GBJohn Innes Centre · GB

Funding

Biotechnology and Biological Sciences Research Council BB/M011224/1Biotechnology and Biological Sciences Research Council BB/T001801/1Biotechnology and Biological Sciences Research Council BB/T006722/1
6 · The paper itself

Abstract

Engineering N2-fixing symbioses between cereals and diazotrophic bacteria represents a promising strategy to sustainably deliver biologically fixed nitrogen (N) in agriculture. We previously developed novel transkingdom signaling between plants and bacteria, through plant production of the bacterial signal rhizopine, allowing control of bacterial gene expression in association with the plant. Here, we have developed both a homozygous rhizopine producing (RhiP) barley line and a hybrid rhizopine uptake system that conveys upon our model bacterium Azorhizobium caulinodans ORS571 (Ac) 103-fold improved sensitivity for rhizopine perception. Using this improved genetic circuitry, we established tight rhizopine-dependent transcriptional control of the nitrogenase master regulator nifA and the N metabolism σ-factor rpoN, which drove nitrogenase expression and activity in vitro and in situ by bacteria colonizing RhiP barley roots. Although in situ nitrogenase activity was suboptimally effective relative to the wild-type strain, activation was specific to RhiP barley and was not observed on the roots of wild-type plants. This work represents a key milestone toward the development of a synthetic plant-controlled symbiosis in which the bacteria fix N2 only when in contact with the desired host plant and are prevented from interaction with nontarget plant species.

Indexed as

Azorhizobium caulinodansEdible GrainHordeumNitrogenaseNitrogen FixationPlant RootsInositolSymbiosisInositolNitrogenaserhizopinebarleynitrogen fixationrhizobiumrhizopinesymbiosis

Identifiers

PMID35412890
PMCPMC9169844
OpenAlexW4223527579

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.